I used bandicam, but I don’t think that’s the problem for this, maybe Sony Vegas can’t handle certain video codecs.. Because in original footage played in Media Player Classic everything looks OK.
Here’s some info on the original footage
Format/Info : Audio Video Interleave
File size : 139 MiB
Duration : 5mn 22s
Overall bit rate : 3 613 Kbps
Writing application : BandiAviMuxer 1.0
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Simple@L1
Format settings, BVOP : Yes
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 5mn 22s
Bit rate : 3 603 Kbps
Width : 1 360 pixels
Height : 736 pixels
Display aspect ratio : 1.85:1
Frame rate : 50.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.072
Stream size : 138 MiB (100%)